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參數資料
| 型號： | AD9260AS |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | High-Speed Oversampling CMOS ADC with 16-Bit Resolution at a 2.5 MHz Output Word Rate |
| 中文描述： | 1-CH 16-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP44 |
| 封裝： | MS-022AB, MQFP-44 |
| 文件頁數： | 27/36頁 |
| 文件大小： | 572K |
| 代理商： | AD9260AS |
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AD9260
–27–
REV. B
The scaling is accomplished by properly attaching an external
resistor to the BIAS pin of the AD9260 as shown in Table IX.
R
EXT
is normally 2 k
for a clock speed of 20 MHz and scales
inversely with clock rate. Because BIAS is an external pin, mini-
mization of capacitance to this pin is recommended in order to
prevent instability of the bias pin amplifier.
AVDD
4R
3R
2R
R
MODE PIN
AVSS
E
LATCH
CLOCK
ENCODED MODE
Figure 62. Simplified Mode Pin Circuitry
BIAS CURRENT
REXT
BIAS PIN
1V
Figure 63. Simplified Bias Pin Circuitry
POWER DISSIPATION CONSIDERATIONS
The power dissipation of the AD9260 is dependent on its
application-specific configuration and operating conditions.
The analog power dissipation as shown in Figure 64 is primarily
a function of its power bias setting and sample rate. It remains
insensitive to the particular input waveform being digitized or
digital filter MODE setting. The digital power dissipation is
primarily a function of the digital supply setting (i.e., +3 V to
+5 V), the sample rate and, to a lesser extent, the MODE setting
and input waveform. Figures 65a and 65b show the total current
dissipation of the
“
combined
”
digital (DVDD) and digital driver
supply (DRVDD) for +3 V and +5 V supplies. Note, DVDD
and DRVDD are typically derived from the same supply bus
since no degradation in performance results. A 1 MHz full-
scale sine wave was used to ensure maximum digital activity in
the digital filters and the digital drivers had a fanout of one.
Note also that a twofold decrease in digital supply current re-
sults when the digital supply is reduced form +5 V to +3 V.
SAMPLE RATE
–
MSPS
I
A
–
5
30
70
90
110
130
10
15
20
50
FULL BIAS-2k
HALF BIAS-4k
QUARTER BIAS-8k
Figure 64. I
AVDD
vs. Sample Rate (AVDD = +5 V,
Mode 1
×
–4
×
)
8
2
4
1
SAMPLE RATE
–
MSPS
I
D
/
D
–
5
6
10
12
14
16
10
15
20
8
4
2
0
Figure 65a. I
DVDD
/I
DRVDD
vs. Sample Rate (DVDD = DRVDD =
3 V, f
IN
= 1 MHz)
8
2
4
1
SAMPLE RATE
–
MSPS
I
D
/
D
–
5
10
20
25
30
10
15
20
15
5
0
Figure 65b. I
DVDD
/I
DRVDD
vs. Sample Rate (DVDD = DRVDD
= 5 V, f
IN
= 1 MHz)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9260ASRL | 制造商:Analog Devices 功能描述:ADC Single Pipelined 2.5Msps 16-bit Parallel 44-Pin MQFP T/R 制造商:Rochester Electronics LLC 功能描述:16-BIT HIGH SPEED OVERSAMPLED ADC - Bulk |
| AD9260ASZ | 功能描述:IC ADC CMOS 16BIT OVRSAMP 44MQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數:12 采樣率（每秒）:20M 數據接口:并聯 轉換器數目:2 功率耗散（最大）:155mW 電壓電源:模擬和數字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數目和類型:4 個單端，單極；2 個差分，單極 產品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| AD9260ASZRL | 功能描述:IC ADC 16BIT 2.5MHZ 44MQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:- 位數:14 采樣率（每秒）:83k 數據接口:串行，并聯 轉換器數目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設備封裝:28-PDIP 包裝:管件 輸入數目和類型:1 個單端，雙極 |
| AD9260EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:High-Speed Oversampling CMOS ADC with 16-Bit Resolution at a 2.5 MHz Output Word Rate |
| AD9260-EB | 制造商:Analog Devices 功能描述:Evaluation Board For AD9260 制造商:Analog Devices 功能描述:DEV TOOLS, EVAL BD FOR AD9260 - Bulk |
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